Hi Barry,
First of all, welcome to the group.
At the moment I don't know anyone looking to adopt out any of their grandis.
Maybe you already know Turtle homes Asia has an adoption program.(dead link removed)
You could also try contacting Russ Gurley of the Turtle & tortoise preservation group:http://www.ttpg.org/htm/surplus.html
I hope this helps,
Marnix